Electrical Machines Which of the following is minimized by laminating the core of a transformer? Copper loss. Hysteresis loss. Stray loss. Eddy current loss. Copper loss. Hysteresis loss. Stray loss. Eddy current loss. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines To achieve spark less commutation brushes of DC generator are rocked ahead so as to bring them None of these just ahead of magnetic neutral axis. just behind the magnetic neutral axis. in magnetic neutral axis. None of these just ahead of magnetic neutral axis. just behind the magnetic neutral axis. in magnetic neutral axis. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In travelling cranes for crane travel, trolley and boom hoist which motor is preferred? Slip ring induction motor. Stepper motor. DC differential compound motor. Synchronous motor. Slip ring induction motor. Stepper motor. DC differential compound motor. Synchronous motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In which transformer, the tertiary winding is used? Star - star Star - delta Delta - delta Delta - star Star - star Star - delta Delta - delta Delta - star ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a DC shunt generator working on load, the brushes are moved forward in the direction of rotation, as a result of this, commutation will worsen and terminal voltage will fall worsen and terminal voltage will rise. improve and terminal voltage will rise . improve but terminal voltage will fall. worsen and terminal voltage will fall worsen and terminal voltage will rise. improve and terminal voltage will rise . improve but terminal voltage will fall. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 4-pole dc generator runs at 1500 rpm. The frequencyof current in the armature winding is 25 Hz 100 Hz 50 Hz 0 Hz 25 Hz 100 Hz 50 Hz 0 Hz ANSWER DOWNLOAD EXAMIANS APP
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